Earthquake with magnitude of Md 2.0 on date 27-09-1997 and time 12:13:55 (Italy) in region 4 km E Perugia (PG)

A magnitude Md 2.0 earthquake occured in region: 4 km E Perugia (PG), on

  • 27-09-1997 10:13:55 (UTC)
  • 27-09-1997 12:13:55 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0920, 12.4280 at 10 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Perugia PG 4 166134 166134
Torgiano PG 7 6725 172859
Bettona PG 10 4367 177226
Bastia Umbra PG 10 21874 199100
Deruta PG 12 9669 208769
Corciano PG 12 21332 230101
Assisi PG 16 28299 258400
Valfabbrica PG 16 3389 261789
Cannara PG 17 4305 266094
Magione PG 19 14865 280959

Municipalities with at least 50000 inhabitants

An earthquake occurred to
4 Km E of Perugia (166134 inhabitants)
27 Km NW of Foligno (57155 inhabitants)
61 Km SE of Arezzo (99543 inhabitants)
62 Km N of Terni (111501 inhabitants)
79 Km NE of Viterbo (67173 inhabitants)
92 Km E of Siena (53903 inhabitants)
96 Km SW of Fano (60888 inhabitants)
99 Km SW of Pesaro (94582 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
Md 2.0
ML-VAX 2.0
1997-09-27
10:13:55
43.092 12.428 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 281609
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-09-27 10:13:55 ± 0.442
Latitude 43.0920 ± 0.0257
Longitude 12.4280 ± 0.0406
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 281609

Uncertainty

Field Value
Preferred uncertainty description horizontal uncertainty
Semi-major axis of confidence ellipse (meter)
Semi-minor axis of confidence ellipse (meter)
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi)
Circular confidence region, given by single value of horizontal uncertainty (meter) 4359.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 161
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.6
Epicentral distance of station closest to the epicenter (degree) 0.00146
Epicentral distance of station farthest from the epicenter (degree) 0.00656
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitudes information

Md:2.0

Field Value
Value 2.0
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 281609
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:25:45

ML:2.0

Field Value
Value 2.0
Uncertainty
Num. used stations 1
Type of magnitude ML
Reference to an origin 281609
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 13:07:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.FB9.Z. 1997-09-27T10:14:20.20 10.0 undecidable manual SG 22 0.6438 1.51 0.1
--.ARV.Z. 1997-09-27T10:14:13.93 10.0 undecidable manual SG 42 0.5439 -1.62 0.1
--.MNS.Z. 1997-09-27T10:14:10.17 10.0 undecidable manual PG 165 0.7326 -0.35 1.6
--.FB9.Z. 1997-09-27T10:14:09.57 10.0 undecidable manual PG 22 0.6438 0.52 1.4
--.CRE.Z. 1997-09-27T10:14:08.73 10.0 undecidable manual PG 326 0.6327 0.05 1.8
--.ARV.Z. 1997-09-27T10:14:05.99 10.0 undecidable manual PG 42 0.5439 -1.24 0.7
--.ASS.Z. 1997-09-27T10:14:03.59 10.0 undecidable manual SG 100 0.1665 0.46 0.7
--.ASS.Z. 1997-09-27T10:14:00.68 10.0 undecidable manual PG 100 0.1665 0.62 1.5
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download